3 The Quotient Rule

# 3 The Quotient Rule - Next Derivatives of Trig Functions Up...

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Next: Derivatives of Trig Functions Up: Derivatives: How to Find Previous: The Product Rule The Quotient Rule Now, we want to be able to take the derivative of a fraction like f / g , where f and g are two functions. This one is a little trickier to remember, but luckily it comes with its own song. The formula is as follows: How to Remember this Formula (with thanks to Snow White and the Seven Dwarves): Replacing f by hi and g by ho ( hi for high up there in the numerator and ho for low down there in the denominator), and letting D stand in for `the derivative of', the formula becomes:

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